反应详情

A solution of 4-[4-[2-(2-hydroxyethylthio)ethoxy]phenyl]-1,1,1-trifluoro-2-butanone (1.20 g, 3.72 mmol), 4,4′-dimethylbenzhydrol (0.95 g, 4.47 mmol) and p-toluenesulfonic acid (0.035 g) in toluene (20 ml) was heated under reflux for 15 min. The cooled reaction mixture was diluted with ethyl acetate, washed with saturated sodium bicarbonate, brine and dried (magnesium sulfate). Evaporation of the solvent in vacuo and chromatography of the residue on silica gel (elution with a gradient of ethyl acetate 20-40% in hexane) gave 1.81 g (94%) of the title material as an oil.

1. temperatureunder reflux for 15 min
2. customThe cooled reaction mixture
3. washwashed with saturated sodium bicarbonate, brine
4. dry with materialdried (magnesium sulfate)
5. customEvaporation of the solvent in vacuo and chromatography of the residue on silica gel (
6. washelution with a gradient of ethyl acetate 20-40% in hexane)